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Showing 1 to 8 of 8 for “"Geomagnetically induced current"”.
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Transformer Thermal Assessment under Geomagnetically Induced Current Conditions
… especially during transient phenomena such as Geomagnetically Induced Current (GIC). To fulfill this goal, it is necessary to perform several tasks in different fields, such as geometry and material modeling, electromagnetic studies, and investigation into computational fluid dynamic (CFD) …
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Geomagnetically induced current sensitivity to assumed substation grounding resistances in the power system
… damage to the power grid by inducing quasi-dc currents called geomagnetically induced current (GIC). Protection against GMD therefore necessitates the accurate estimation of GICs. GICs estimation is challenging because it depends on substation grounding resistances, which 1) depend more on the …
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Optimal Mitigation of Geomagnetically Induced Current Effects in Power Systems Considering Transformer Thermal Limits
… are of particular concern as they give rise to geomagnetically induced currents (GIC) which have adverse effects on the national power grid and potentially damage transformers on the grid. GIC flowing along transmission lines and through the transformers in power systems can be attributed to …
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Geomagnetically induced currents and their effect on power systems
… induce a change in the Earth’s magnetic field. Geomagnetically induced current (GIC) then enters the power grid and causes unusual real and reactive power flows, voltage fluctuations, frequency shifts, undesired relay operations, high third-harmonic currents and telemetry and supervisory alarm …
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Impact of Geomagnetically Induced Currents on Power Transformers
This thesis deals with the impact of Geomagnetically Induced Current (GIC) on power transformers in electrical power systems. A simulator to calculate the flows of GIC in an electrical power network, based on an assumed or measured induced geoelectric potential is proposed. This simulator includes …
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Study of Power Transformer Abnormalities and IT Applications in Power Systems
… cause of transformer successive failures, and current surge arrester configuration did not provide enough lightning protection to GSU transformers. Mitigation of abnormal electrical phenomena effects on GSU transformers was proposed and discussed. The study can be a complete reference of …
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Modeling, simulation, and mitigation of the impacts of the late time (E3) high-altitude electromagnetic pulse on power systems
The student, Trevor Hutchins, accepted the attached license on 2015-11-24 at 10:07.
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High-performance computing for smart grid analysis and optimization
… to accelerate the computation of alternating current optimal power flow (ACOPF). We first construct and solve an equivalent OPF problem for an equivalent reduced system. Then, a distributed algorithm is developed to retrieve the optimal solution for the original power system. Experimental …